第20题: [单项选择]Because folk art is neither completely rejected nor accepted as an art form by art historians, their final evaluations of it necessarily remain ______. A. arbitrary B. estimable C. unspoken D. equivocal 参考答案:D 答案解析:(equivocal含糊的,不确定的)。句意为:艺术史学家既不完全否认民间艺术又不把它看作是一种艺术形式,因此他们对民间艺术最终的评价必定还是含糊的。A. arbitrary武断的;B.estimab